Toona sinensis: It belongs to Meliaceae. Scientific name: Toona sinensis.

Leaves are usually even-pinnate compound leaves, alternate, leaflets 10-22, oblong or elliptic-lanceolate, entire or with inconspicuous obtuse teeth, nearly glabrous.

Young leaves can be eaten in spring, that is, Toona sinensis buds can be eaten as vegetables.

Flowers white, panicles terminal or axillary, pendulous 30 cm. Fruit elliptic-obovate or elliptic, five-lobed, with thick central axis. The upper part of the seed has rectangular thin wings.

Distribution: North and South of China.

The wood is reddish brown, firm, delicate, non-warping, non-cracking, and has good stability.

Uses: high-quality wood, used for high-grade furniture and interior decoration materials.

Ailanthus altissima: It belongs to Achyranthes. Scientific name: Ailanthus altissima

Odd-pinnate compound leaves, all around the middle, with 1-4 glandular teeth on both sides of the base. Branches and leaves have thorns, and the leaves smell bad and cannot be eaten.

Distribution: From southeastern China to the middle and lower reaches of the Yangtze River.

It has strong drought resistance, smoke and dust resistance, fast growth and strong germination, and is one of the important afforestation trees.

Wood: thick and hard, not resistant to water and humidity, the material is inferior to Toona sinensis.

Uses: plywood, paper making.

Leaf: Silkworms can be raised. Seeds can extract oil.

Root bark: used as medicine, also known as Toona sinensis root bark, also known as "white bark", cold in nature and bitter in taste.

Functions: clearing away damp-heat, astringing and astringing, treating leukorrhagia due to damp-heat, blood due to intestinal wind and diarrhea; You can also wash scabies.